George booth



G. BOOTH.

(No Model.)

BATH TUB.

Patented Mar. 29, 1898.

NITED STATES PATENT Fries.

GEORGE BOOTH, OF` TORONTO, CANADA, ASSIGNOR TO THE TORONTO STEEL CLAD VBATH AND METAL'COMPAN'Y, OF SAME PLACE.

' BATH-TUB.

SPECIFICATION forming part Of Letters Patent N0. 601,236, dated March 29, 1898. Application filed'lVlar'Gll 1S, 189-7. Serial No. 628,143. (No model.)

To all whom t 11i/ty concern:

Be it known that I, GEORGE BOOTH, manufacturer, of the city of Toronto, in the county of York, in the Province of Ontario, Canada,

have invented certain new and useful Improvements in Bath-Tubs, of whichr the following is a specification.

-My invention relates to improvements in enamel-lined bath-tubs; and the object of the 1o invention is to produce a light bath-tub which will absorb but a minimum amount of heat and thereby not have a tendency to cool hot water when used; and it consists, essentially,

of abath-tub made of sheet metal, preferably `1 5 in three sections, the sections being joined together by an overlapping form of joint, so arranged that the interior surface of the sheet metal at the joint is substantially iiush and finished smooth without crack or crevice, and zo the protuberance of the joint is formed, preferably, on the exterior of the bath-tub, the overlapping portions being preferably secured together by rivets countersunk on the inside of the bath-tub and finished smooth, the whole interior of the bath having fixed upon it a lining of enamel or other vitreous material by which a smooth unbrokenand unmarred surface covering the joints is given to the interior of the bath-tub, as hereinafter 3o more particularly explained.

Figure l isv a longitudinal sectional perspective View of a bath-tub constructed in accordance withl my invention before the enamel lining has been Vfused onto the metal. Fig. 2 is a similar view of the bath-tub cornplete. Fig. 3 is an enlarged sectional View, exaggerated, showing the joints.

In the drawings like letters of reference indicate corresponding parts inv each gure.

Heretofore bath-tubshave been made of cast-iron in one piece with alining of enamel. Necessarily in this construction the iron had to be of such a weight and thickness that not only was it inconvenient for transportation, but the thickness of the material was such that when hot Water is used in the bath-tub the heat of the hot water would be absorbed by the material and the Water thereby rendered cool and consequently useless to a person l 5o 4wanting a hot bath.

I have already obtained a patent in the United States for a bath-tub with a lining of aluminium, copper, or other light material. Although this is a light bath and possesses many advantages, yet it is difficult to keep clean and of a presentable appearance.

In the present invention I have sought tov obtain not only lightness, but to produce a bath-tub of which the interior may be always kept perfectly clean and presenta smooth 6o unbroken surface not liable to-be affected by the bathing-water.Y y

A is the head, B the central, and O the foot section, of the bath-tub, which have upper terminal -flanges a, 5 and c, respectively. 65 The central section B is provided with enddepressed flanges b' and b2, extending lengthwise of the bath-tub. At the outer ends of the flanges h and b2 are formed outwardlyturned lips b3 and b4, respectively. These 7o lips b3 and b4 serve to form a means of connecting the legs or supports C of the bathtub to it.

a' is an inturned flange extending lengthwise of the bath-tub and formed at theinner edge of the head-section A, such inturned flange being designed to be secured to the flange h', preferably by rivets D, the inner ends of which have countersunk heads. The edge of the flange a" is brought againsta 8o shoulder b5v of the depressed flange in such a manner that it may be hammered and wedged against it and thereby when nished off smooth by an emery-wheel present no projections or inequalities of surface liable to interferewith the perfect enameling and use of the bath-tub after being enameled.

The foot-section is provided with an inturned flange c', extending lengthwise of the bath-tub and designed to be fastened by riv- 9o ets E upon the depressed lange b2 in a similar manner to that in which the flange a is fastened to the depressed ange b'. The flange c' would also preferably be finished flush with the surface of the central section B.

Although I describe the flanges a and c' being nished flush, it will of course be .understood that they might be raised as longas no sharp corner would be formed liable to interfere with the proper enameling and use of Ioo the bath-tub. Again, I may state lthat although I show rivets as securing the connecting-flanges of the central and head sections I might electrically weld these iianges together.

The great object to be attained, however, is to prevent the joint at the bottom of the bath from gaping open during the great heat necessary for enameling, and this I find in practice is effectually prevented by having the broad overlapping joint hereinbefore described in which any tensile tendency is prevented by the broad abutting gripping-surfaces of the flanges when held tightly together. I have made several experiments on the joint and have found that this is the only joint Which seems to withstand the effeet of the tiring during the process of enameling.

I find outWardly-turned abutting flanges, as in my copper-lined sheet-metal bath-tub, entirely unsuitable, as the intense heat causes them to spread apart and thereby render the interior of the tub unsuitable for enameling.

The enamelingis accomplished in the usual way, and the coating of enamel F when fused onto the interior surface of the metal bathtub effectually hides all joints and rivets.

Although I describe in this specification the depressed ilange being formed on the central section as the preferable construction, it Will be readily understood that I might make the flanges formed at the head and foot sections underlie or overlap the straight ends ofthe een! trai section. In the latter case of course the inner edge of the head and foot sections might be beveled oft so as not to be objectionable.

That I claim as my invention is l. As an improved article of manufacture, a bath-tub composed of a smooth sheet-metal casing made in head, central and foot sections, depressed ilanges formed at the ends of the central sections having their surfaces parallel to the cross-sectional contour of the central section and forming a longitudinal extension thereof, the head and foot sections with flanges formed at the inner edge thereof adapted to lie upon the depressed flanges of the central section, means for securing the overlapping sections together so as to form a smooth crackless joint, outwardly-turned iianges formed at the outer edge of the depressed iianges and legs secured to said lastnamed anges as and for the purpose speciiied.

2. As an improved article of manufacture, a bath-tub composed of a smooth sheet-metal casing made in head, central and foot sections, inturned flanges formed on the head and foot sections adapted to lie upon the ends of the central sections, means for connecting the sections together, and aninner unbroken lining of enamel or other vitreous material fused over the entire interior surface of the sections and covering the joints as and for the purpose specified.

GEORGE BOOTII.

Vitnesses:

B. BOYD, II. DENNIsoN. 

